IBM 1130 computer in a desk.
The Krannert Business School had an 1130 on raised floor in an upper story of the Krannert Building. There was even a glass wall that separated the machine from the user program preparation area. I had friends. I worked on the other side.
They also had a Procsy terminal in the machine room. I started hanging out there because, unlike most terminals around campus, that terminal was rarely in use.
I can't remember what I programmed on the 1130. I know I did write something because I remember trading 1130 stories with Jim in the PUCC computing center. His pride was a demo program that used interrupts to keep all the peripheral devices running full speed at once. That was pointless, but still something to watch.
I also met a business major who was working on a real estate modeling program for one-of-a-kind properties like shopping malls. He had the math worked out but didn't know how to run cases through it. I wrote, for hire, a command like module that would tweak variables and rerun analyses.